This early warning has been made by the Director of Public Health for Lancashire, following the recent increase in the number of Covid-19 cases in Pendle, particularly affecting Nelson and Brierfield.
The overall rate and number of cases remains relatively low, but there are signs of ongoing household transmission.
If you are showing symptoms, please get tested so that you can protect yourself, your family and friends.
While there is no immediate need for a lockdown similar to Leicester, people need to continue to follow the guidelines.
Dr Sakthi Karunanithi, director of public health for Lancashire, said: "We need your help now to reduce the number of cases in the future and keep Pendle out of lockdown.
"With the slight increase in the Covid-19 infection rate in Pendle, it’s really important to stay alert to the risks. We should all do what we can to limit the spread of infection.
"It can feel like things are back to normal, but we are still in the middle of a pandemic and there is risk for the virus to come back.
"Wash your hands thoroughly and regularly, respect any safety measures when you’re going out and maintain the two metre distance wherever possible. And don't forget to wear a mask in enclosed spaces.
"By doing what you can to help yourself and the people who are important to you, you can still do things that you enjoy.
"If you have symptoms, it's very important to stay at home, get yourself tested and follow the advice from the NHS Test and Trace service.
"Please share this advice with your family, friends and work colleagues. It's important that we get the message out and work together to keep our communities safe."
People are reminded to:
- Stay at home if you or anyone in your household has any symptoms of Coronavirus
- Wash your hands regularly using soap and water or hand sanitiser
- Keep 2m distance from people not in your household
- Avoid handshakes and embracing when meeting others
- Wear a face covering in enclosed spaces
- Avoid or limit large extended family gatherings inside
A mobile testing unit is in Pendle until Sunday 19 July, as previously planned. Tests are free and open to people of any age.
To find out more about testing and book a test, please visit www.gov.uk/coronavirus